247 lines
6.2 KiB
C
247 lines
6.2 KiB
C
/*
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* Copyright (c) 1980 Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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char copyright[] =
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"@(#) Copyright (c) 1980 Regents of the University of California.\n\
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All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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/*static char sccsid[] = "from: @(#)rain.c 5.6 (Berkeley) 2/28/91";*/
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static char rcsid[] = "$Id: rain.c,v 1.2 1993/08/01 18:52:54 mycroft Exp $";
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#endif /* not lint */
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/*
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* rain 11/3/1980 EPS/CITHEP
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* cc rain.c -o rain -O -ltermlib
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*/
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#include <sys/types.h>
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#include <stdio.h>
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#ifdef USG
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#include <termio.h>
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#else
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#include <sgtty.h>
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#endif
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#include <signal.h>
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#define cursor(c, r) tputs(tgoto(CM, c, r), 1, fputchar)
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#ifdef USG
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static struct termio sg, old_tty;
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#else
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static struct sgttyb sg, old_tty;
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#endif
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int fputchar();
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char *LL, *TE, *tgoto();
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main(argc, argv)
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int argc;
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char **argv;
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{
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extern short ospeed;
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extern char *UP;
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register int x, y, j;
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register char *CM, *BC, *DN, *ND, *term;
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char *TI, *tcp, *mp, tcb[100],
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*malloc(), *getenv(), *strcpy(), *tgetstr();
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long cols, lines, random();
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int xpos[5], ypos[5];
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static void onsig();
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if (!(term = getenv("TERM"))) {
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fprintf(stderr, "%s: TERM: parameter not set\n", *argv);
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exit(1);
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}
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if (!(mp = malloc((u_int)1024))) {
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fprintf(stderr, "%s: out of space.\n", *argv);
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exit(1);
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}
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if (tgetent(mp, term) <= 0) {
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fprintf(stderr, "%s: %s: unknown terminal type\n", *argv, term);
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exit(1);
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}
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tcp = tcb;
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if (!(CM = tgetstr("cm", &tcp))) {
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fprintf(stderr, "%s: terminal not capable of cursor motion\n", *argv);
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exit(1);
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}
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if (!(BC = tgetstr("bc", &tcp)))
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BC = "\b";
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if (!(DN = tgetstr("dn", &tcp)))
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DN = "\n";
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if (!(ND = tgetstr("nd", &tcp)))
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ND = " ";
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if ((cols = tgetnum("co")) == -1)
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cols = 80;
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if ((lines = tgetnum("li")) == -1)
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lines = 24;
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cols -= 4;
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lines -= 4;
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TE = tgetstr("te", &tcp);
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TI = tgetstr("ti", &tcp);
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UP = tgetstr("up", &tcp);
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if (!(LL = tgetstr("ll", &tcp))) {
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if (!(LL = malloc((u_int)10))) {
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fprintf(stderr, "%s: out of space.\n", *argv);
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exit(1);
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}
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(void)strcpy(LL, tgoto(CM, 0, 23));
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}
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#ifdef USG
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ioctl(1, TCGETA, &sg);
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ospeed = sg.c_cflag&CBAUD;
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#else
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gtty(1, &sg);
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ospeed = sg.sg_ospeed;
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#endif
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(void)signal(SIGHUP, onsig);
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(void)signal(SIGINT, onsig);
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(void)signal(SIGQUIT, onsig);
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(void)signal(SIGSTOP, onsig);
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(void)signal(SIGTSTP, onsig);
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(void)signal(SIGTERM, onsig);
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#ifdef USG
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ioctl(1, TCGETA, &old_tty); /* save tty bits for exit */
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ioctl(1, TCGETA, &sg);
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sg.c_iflag &= ~ICRNL;
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sg.c_oflag &= ~ONLCR;
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sg.c_lflag &= ~ECHO;
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ioctl(1, TCSETAW, &sg);
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#else
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gtty(1, &old_tty); /* save tty bits for exit */
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gtty(1, &sg);
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sg.sg_flags &= ~(CRMOD|ECHO);
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stty(1, &sg);
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#endif
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if (TI)
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tputs(TI, 1, fputchar);
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tputs(tgetstr("cl", &tcp), 1, fputchar);
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(void)fflush(stdout);
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for (j = 4; j >= 0; --j) {
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xpos[j] = random() % cols + 2;
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ypos[j] = random() % lines + 2;
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}
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for (j = 0;;) {
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x = random() % cols + 2;
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y = random() % lines + 2;
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cursor(x, y);
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fputchar('.');
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cursor(xpos[j], ypos[j]);
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fputchar('o');
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if (!j--)
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j = 4;
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cursor(xpos[j], ypos[j]);
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fputchar('O');
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if (!j--)
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j = 4;
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cursor(xpos[j], ypos[j] - 1);
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fputchar('-');
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tputs(DN, 1, fputchar);
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tputs(BC, 1, fputchar);
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tputs(BC, 1, fputchar);
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fputs("|.|", stdout);
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tputs(DN, 1, fputchar);
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tputs(BC, 1, fputchar);
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tputs(BC, 1, fputchar);
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fputchar('-');
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if (!j--)
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j = 4;
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cursor(xpos[j], ypos[j] - 2);
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fputchar('-');
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tputs(DN, 1, fputchar);
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tputs(BC, 1, fputchar);
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tputs(BC, 1, fputchar);
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fputs("/ \\", stdout);
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cursor(xpos[j] - 2, ypos[j]);
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fputs("| O |", stdout);
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cursor(xpos[j] - 1, ypos[j] + 1);
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fputs("\\ /", stdout);
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tputs(DN, 1, fputchar);
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tputs(BC, 1, fputchar);
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tputs(BC, 1, fputchar);
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fputchar('-');
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if (!j--)
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j = 4;
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cursor(xpos[j], ypos[j] - 2);
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fputchar(' ');
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tputs(DN, 1, fputchar);
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tputs(BC, 1, fputchar);
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tputs(BC, 1, fputchar);
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fputchar(' ');
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tputs(ND, 1, fputchar);
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fputchar(' ');
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cursor(xpos[j] - 2, ypos[j]);
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fputchar(' ');
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tputs(ND, 1, fputchar);
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fputchar(' ');
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tputs(ND, 1, fputchar);
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fputchar(' ');
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cursor(xpos[j] - 1, ypos[j] + 1);
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fputchar(' ');
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tputs(ND, 1, fputchar);
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fputchar(' ');
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tputs(DN, 1, fputchar);
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tputs(BC, 1, fputchar);
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tputs(BC, 1, fputchar);
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fputchar(' ');
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xpos[j] = x;
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ypos[j] = y;
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(void)fflush(stdout);
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}
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}
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static void
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onsig()
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{
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tputs(LL, 1, fputchar);
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if (TE)
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tputs(TE, 1, fputchar);
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(void)fflush(stdout);
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#ifdef USG
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ioctl(1, TCSETAW, &old_tty);
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#else
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stty(1, &old_tty);
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#endif
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exit(0);
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}
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static
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fputchar(c)
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char c;
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{
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putchar(c);
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}
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